Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

CalhounUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 12 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.

Nothing else has been detected within 20 km in the last 24 hours.

This alert expired on 27 June 2026 at 23:47 UTC. It is kept here as a record.

No stronger detection stands among the 72 recorded within 20 km of this point since 16 March 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flash Flood Warning issued June 27 at 7:37PM EDT until June 27 at 7:45PM EDT by NWS Charleston WV

An estimated 30,991 people live within 50 km of this point.

Nearby, since 16 March 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 34 out of 100, at 77 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)34 / 100
Our confidence77%
Coordinates38.9167, -81.2292
Nearest CityParkersburg (49 km)
Population Exposed31.0K within 50 km
Impact Tiersignificant
Timestamp2026-06-27T23:37:00.000Z
Sourcehttps://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.bf1031e8e760bb2786d61e480ef3aa2ec9f2db9e.001.1

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescCalhoun, WV; Gilmer, WV; Roane, WV; Wirt, WV
HeadlineFlash Flood Warning issued June 27 at 7:37PM EDT until June 27 at 7:45PM EDT by NWS Charleston WV
Expires2026-06-27T19:47:00-04:00
SenderNameNWS Charleston WV
HasExactCoordstrue

Safety Information

During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

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